Copper and phosphorus effect on residual embrittlement of irradiated model alloys and RPV steels after annealing

Matti Valo, L. Debarberis (Corresponding Author), A. Kryukov, A. Chernobaeva

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

The dependence of the recovery of the transition temperature shift after annealing (475 °C, 100 h) on copper and phosphorus contents has been studied on irradiated reactor pressure vessel (RPV) materials. A set of model alloys with low nickel content, lower than 0.2 mass%, was used for the study. Copper and phosphorus contents were varied in a wide range: 0.005–0.99 and 0.002–0.039 mass%, respectively. Recovery efficiency has been estimated by the value of residual embrittlement after annealing, measured in terms of a shift in transition temperature (ΔTKres). A comparison of the results obtained on model alloys with data for VVER-440 RPV materials has also been carried out. Comparative analysis has confirmed the conclusion that ΔTKres is independent of phosphorus content while the effect of copper on ΔTKres is not significant for typical VVER-440 RPV materials with a typical range of Cu contents between 0.10 and 0.24 mass%. However, for model alloys with a wider range of copper content, copper mainly controls the value of ΔTKres.
Original languageEnglish
Pages (from-to)575-579
JournalInternational Journal of Pressure Vessels and Piping
Volume85
Issue number8
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

Embrittlement
Steel structures
Phosphorus
Copper
Annealing
Pressure vessels
Superconducting transition temperature
Recovery
Nickel

Keywords

  • Annealing
  • Irradiation
  • Recovery
  • Transition temperature
  • Copper
  • Phosphorus

Cite this

@article{0ed9fc8ba19d488fbbe9b72d46e93cf5,
title = "Copper and phosphorus effect on residual embrittlement of irradiated model alloys and RPV steels after annealing",
abstract = "The dependence of the recovery of the transition temperature shift after annealing (475 °C, 100 h) on copper and phosphorus contents has been studied on irradiated reactor pressure vessel (RPV) materials. A set of model alloys with low nickel content, lower than 0.2 mass{\%}, was used for the study. Copper and phosphorus contents were varied in a wide range: 0.005–0.99 and 0.002–0.039 mass{\%}, respectively. Recovery efficiency has been estimated by the value of residual embrittlement after annealing, measured in terms of a shift in transition temperature (ΔTKres). A comparison of the results obtained on model alloys with data for VVER-440 RPV materials has also been carried out. Comparative analysis has confirmed the conclusion that ΔTKres is independent of phosphorus content while the effect of copper on ΔTKres is not significant for typical VVER-440 RPV materials with a typical range of Cu contents between 0.10 and 0.24 mass{\%}. However, for model alloys with a wider range of copper content, copper mainly controls the value of ΔTKres.",
keywords = "Annealing, Irradiation, Recovery, Transition temperature, Copper, Phosphorus",
author = "Matti Valo and L. Debarberis and A. Kryukov and A. Chernobaeva",
year = "2008",
doi = "10.1016/j.ijpvp.2007.05.002",
language = "English",
volume = "85",
pages = "575--579",
journal = "International Journal of Pressure Vessels and Piping",
issn = "0308-0161",
publisher = "Elsevier",
number = "8",

}

Copper and phosphorus effect on residual embrittlement of irradiated model alloys and RPV steels after annealing. / Valo, Matti; Debarberis, L. (Corresponding Author); Kryukov, A.; Chernobaeva, A.

In: International Journal of Pressure Vessels and Piping, Vol. 85, No. 8, 2008, p. 575-579.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Copper and phosphorus effect on residual embrittlement of irradiated model alloys and RPV steels after annealing

AU - Valo, Matti

AU - Debarberis, L.

AU - Kryukov, A.

AU - Chernobaeva, A.

PY - 2008

Y1 - 2008

N2 - The dependence of the recovery of the transition temperature shift after annealing (475 °C, 100 h) on copper and phosphorus contents has been studied on irradiated reactor pressure vessel (RPV) materials. A set of model alloys with low nickel content, lower than 0.2 mass%, was used for the study. Copper and phosphorus contents were varied in a wide range: 0.005–0.99 and 0.002–0.039 mass%, respectively. Recovery efficiency has been estimated by the value of residual embrittlement after annealing, measured in terms of a shift in transition temperature (ΔTKres). A comparison of the results obtained on model alloys with data for VVER-440 RPV materials has also been carried out. Comparative analysis has confirmed the conclusion that ΔTKres is independent of phosphorus content while the effect of copper on ΔTKres is not significant for typical VVER-440 RPV materials with a typical range of Cu contents between 0.10 and 0.24 mass%. However, for model alloys with a wider range of copper content, copper mainly controls the value of ΔTKres.

AB - The dependence of the recovery of the transition temperature shift after annealing (475 °C, 100 h) on copper and phosphorus contents has been studied on irradiated reactor pressure vessel (RPV) materials. A set of model alloys with low nickel content, lower than 0.2 mass%, was used for the study. Copper and phosphorus contents were varied in a wide range: 0.005–0.99 and 0.002–0.039 mass%, respectively. Recovery efficiency has been estimated by the value of residual embrittlement after annealing, measured in terms of a shift in transition temperature (ΔTKres). A comparison of the results obtained on model alloys with data for VVER-440 RPV materials has also been carried out. Comparative analysis has confirmed the conclusion that ΔTKres is independent of phosphorus content while the effect of copper on ΔTKres is not significant for typical VVER-440 RPV materials with a typical range of Cu contents between 0.10 and 0.24 mass%. However, for model alloys with a wider range of copper content, copper mainly controls the value of ΔTKres.

KW - Annealing

KW - Irradiation

KW - Recovery

KW - Transition temperature

KW - Copper

KW - Phosphorus

U2 - 10.1016/j.ijpvp.2007.05.002

DO - 10.1016/j.ijpvp.2007.05.002

M3 - Article

VL - 85

SP - 575

EP - 579

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

SN - 0308-0161

IS - 8

ER -